code: def set_as_leaf_node(parent, y_str):
      num_max = 0
      for cat in set(y_str):
          num_cat = y_str.count(cat)
          if num_cat > num_max:
              num_max = num_cat
              most_cat = cat
      parent.text = most_cat
  
file_path: imodels/imodels/tree/c45_tree/c45_utils.py
imports: import math
label_desc: Use image node_id 3 for calling a global function with example usage: set_as_leaf_node(parent, y_str) without return types